| 摘要 |
PURPOSE:To prevent useless force from being applied to an attachment, by providing an engagement tool for engagement to a case of the attachment, fixing the engagement tool to a longitudinally movably cylinder main unit and integrally arranging the attachment and the cylinder. CONSTITUTION:A mounting bed 6 is fixed to the lower side of a cross rail 4 by bolts 5 in the vicinity of a tool exchange original point position. An engagement tool 11 is fixed to the front of a cylinder main unit 9 and engaged to a case 10 of an attachment 2. When a tool 12 in the attachment 2 is replaced, a cylinder 8 is operated to move a piston rod 7 forward, and the engagement tool 11 fixed to the cylinder main unit 9 is moved backward, then an engagement pawl 11b is press contacted to a flange 14 of the case 10 to obtain a condition fixed with the case 10 to the main unit 9. Then if the rod 7 is further moved forward, the attachment 2 is not applied with useless force and can be moved forward by pressing a mount-removal lever 3. |
